1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fae3d93d9820da63779c3f34d6dac4268ee7558d7e662e0209cca740a65607. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a34af0f-2771-4e2d-b44f-8d8488c8fd49.json and https://artists.proofprofile.net/proofs/artist/2a34af0f-2771-4e2d-b44f-8d8488c8fd49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f98d479e838d9e4f8fd453aaefade55844137cb865ef76247b10f46f0016f9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110103780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f029d99ab5ef4e1afe36140344e6c93e3d32cdcc5d8d535574aea589b948bb. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110103781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76e6291ed5668a7ad3b1bbec0134d1c4e65addaaa1746f42f803f15d7712eaa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110103782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fe91acb62657bf36c898d7da95363a2340d28a8ffbcab10ea324ec5adfb4d8. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110103783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa834f0e4e262d80127ab66bc63d5a251d4ef860ae5231b5417039993914dddf2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110103786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffa224bfb1640bca2591a4aacf8771db1201a3ce412b81875814033b8b7a03b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5110103789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07947e46f5efa5ff5b0a3f644c556c864de6ebe3aada3bf27942583e184d276. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES16G1200117.
Si T Eres Mi Hombre Y Yo Tu Mujer (Remixes)
Si T Eres Mi Hombre Y Yo Tu Mujer - Danny Oton Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6055c11c82b348ca20a5e65a06b9f6f9619bb256cc5dbb9fd59ef6bd1d543d6d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES16G1200109.
Si T Eres Mi Hombre Y Yo Tu Mujer - Danny Oton Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791bc4b4d481e6b69ebeb1cb4a81a3cfe7bb64b6d6078f50967a3b95151af9e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES16G1200110.
Si T Eres Mi Hombre Y Yo Tu Mujer - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4337ad4a9ef2d3d95442432062ce703a99f4b61595e2301f177f02d6c49667dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES16G1200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a949dd823e0981f82eca8fa89612c78b01a1d811c7dd07aaf034f76e17c5977. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77a5b5b9c7f08c01457ee58e358633e7dfc524b6428c2052d4ca7bca982ead6. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011000816.